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<h2>
<span class="refentrytitle">GEN53</span>
</h2>
<p>GEN53 —
Creates a linear-phase or minimum-phase impulse response table
from a source table containing a frequency response or an
impulse response.
</p>
</div>
<div class="refsect1">
<a id="idm281472817987160"></a>
<h2>Description</h2>
<p>
GEN53 creates an impulse response function table with either a
linear-phase or a minimum-phase characteristic. The source for
this can either be a frequency response or an impulse response,
stored in an existing table. Optionally, another function table can be used to
window the input and/or the output of the process.
</p>
</div>
<div class="refsect1">
<a id="idm281472817907512"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>f</strong></span> # time size 53 fsrc
[mode fwin]</pre>
<p>
fsrc - source function table. If this is an impulse response, the
size must match the created function table size. If a frequency
response is used, then the created function size needs to be twice
the size of this source. Power-of-two is required.
</p>
<p>
mode - optional, the operation mode, a sum of
(a) input, frequency response (0) or impulse respone (1); (b)
output, linear phase (0) or minimum-phase (2); (c) windowing,
none (0), input (4) and/or output (8). The default mode (0) is
frequency response input, linear-phase output, no windowing.
</p>
<p>
fwin - window function table, power-of-two size is required, but
does not need to match the created function table size.
</p>
</div>
<div class="refsect1">
<a id="idm281472817903704"></a>
<h2>Example</h2>
<p>
Here is a complete example of the GEN53 generator. It uses the file <a class="ulink" href="examples/gen53.csd" target="_top"><em class="citetitle">gen53.csd</em></a>.
</p>
<div class="example">
<a id="idm281472817901928"></a>
<p class="title">
<strong>Example 1218. Example of the GEN53 generator.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<div class="refsect1">
<a id="idm281472678341304"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
-o dac
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="kd">instr</span> <span class="nf">1</span>
a<span class="n">1</span> <span class="nb">diskin</span> <span class="s">"fox.wav"</span>
a<span class="n">2</span> <span class="nb">ftconv</span> a<span class="n">1</span><span class="p">,</span> <span class="nb">p5</span><span class="p">,</span> <span class="mi">256</span>
<span class="nb">out</span> a<span class="n">2</span><span class="o">*</span><span class="nb">p4</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; impulse response</span>
<span class="nb">f</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">131072</span> <span class="mi">1</span> <span class="s">"ir.wav"</span> <span class="mi">0</span> <span class="mi">0</span> <span class="mi">1</span>
<span class="c1">; minimum-phase version</span>
<span class="nb">f</span><span class="mi">2</span> <span class="mi">0</span> <span class="mi">131072</span> <span class="mi">53</span> <span class="mi">1</span> <span class="mi">3</span>
<span class="c1">; Hann window</span>
<span class="nb">f</span><span class="mi">3</span> <span class="mi">0</span> <span class="mi">1024</span> <span class="mi">20</span> <span class="mi">1</span> <span class="mi">1</span>
<span class="c1">; low-pass frequency response</span>
<span class="nb">f</span><span class="mi">4</span> <span class="mi">0</span> <span class="mi">1024</span> <span class="mi">7</span> <span class="mi">0</span> <span class="mi">100</span> <span class="mi">0</span> <span class="mi">24</span> <span class="mi">1</span> <span class="mi">900</span> <span class="mi">1</span>
<span class="c1">; low-pass linear-phase IR</span>
<span class="nb">f</span><span class="mi">5</span> <span class="mi">0</span> <span class="mi">2048</span> <span class="mi">53</span> <span class="mi">4</span> <span class="mi">4</span> <span class="mi">3</span>
<span class="c1">; scale IR</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">3</span> <span class="mf">0.25</span> <span class="mi">2</span>
<span class="nb">i</span><span class="mi">1</span> <span class="o">+</span> <span class="mi">3</span> <span class="mi">1</span> <span class="mi">5</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
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</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472817897640"></a>
<h2>Credits</h2>
<p>Author: Istvan Varga</p>
</div>
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